Switch.



No, 866,806. PATENTEDSEPT. 17, 1907.

E. R. ROBINSON.

SWITCH.

APPLIOATION FILED PEB.18, 1907.

Suvenfoz lvi in use:

3 cordancewith my invention.

45 ing thesame should the occasionarise, J

' NITED; STATES PAT NT ICFFICE.

,ELBEBJT'RJRQBINSON, OF CHICAGO, ILLINOIS.

SWITCH.

Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed February 18,1907; SerialNo.358,103l

To all whom 'it may concern:

Be it known that I, ELBERT R. ROBINSON, a citizen of the United States, residing at Chicago, 'in the county of Cook and State of Illinois, have invented certainnew clare the following to be a full, clear, and exact description of the invention, such'as will enable others skilled. inthe art to which it appertains to make'and use the same, reference being had to the accompanying ll) drawings, and to the letters'andJ figures of reference of this specification.

' marked thereon, which form a'par My invention relates to railroads, but more particu- 1 larly to switches, andhtts for its object to provide a device of this class which will'withstand the wear of the rolling stock withoutdeteriorating, to such an extent Z5 a switch which will wifllstand this wear to such an ex- I tent that the life of the switch tongue and adjacent rail is greatly prolonged, thereby obviating the neces- I sity of frequent renewal of the parts. With this object in view my invention consists in the, novel construction of theswitch tongue and also in the application of a removable chilled piece ofsection to therailiminediately adjacent the switch tongue.

Referring to the accompanying drawing: the figure is a plan view of a switch with railconstructed in ac- In the figure, 1 represents the switch, 2 the continuous rail and 3'the intersecting rail; w '4 indicates the switch tongue pivoted at 5. The said switch tonglie is preferably made of steel having the 10 tapered end portion 6 tempered as illustrated by cross lines.

l "-7 indicatesa removable chill arrangedv in the rail 2 v on. the inner or'flange side thereof. This construction r provides for a ready removal-of the saidv chill for replacand useful Improvements in Switches; and I do de-.

Having thus fully described the several parts of my invention its operation is as follows: The switch tongue being in the position shown in the'drawing, the impact of the flanges of the car wheels is on that portion-of thetongue illustrated by cross lines; consequently in the usual construction excessive wear occurs along this porg 1 tion. By tempering thatportion as above described the tonguewill last a very long time without showing wear. When the switch tongue is thrown out so as to.

confine the rolling stock to the continuous track, there 1 is, asbf-course is clearly understood, a break or gap in the rail opposite the switch tongueysaid break or gap occurring at the intersection of the rails. The rolling stock following the continuous rail 2 strikes thisbreak or gap in the opposite rail and has a tendency to cause the flanges on the wheels E) strike the continuous rail2 at a point directly opposite the said break or gap. At this point therefore in the continuous rail I provide the removable chill 7 thereby hardeningWhe rail at this point and obviating the usual wear.

Having thus fully described my invention what Iv claim as new and desire to'secure by Letters Patent of the United States is.' 1 W l 1. A switch for' railroads comprising a switch tongue having a portion thereof tempered, ahd a removable 'chilled 70,

piece or section arranged in the rail adjacent the said switch tongne, substantially'as described. 2. A switch for railroads comprising a switch tongue 1 having a portion thereof hardenedt-and a removable chilled piece or seetion arranged in the rail adjacent the said switch tongue, substantially as described.

3. A sw itch for railroads comprising a switch tongue, and a chilled piece or section arranged in the i'ail adjacent to saidvswltchjongue, substantially as described.

4. A switchfor railroads comprising a switch tongue and a rail adjacent said switch tongue, that portion of the rail adjacent the switch tongue being hardened to a greater degree than the remaining portion of the rail, substantially as described. r

5; A switch for railroads comprising a rail having a removable chilled piece or section arrangedthereimsubstantially as described.

In testimony whereof, I aflix my signature, in presenceof two witnesses.

' g ELBERT R. ROBINSON.

Witnesses: I ELLA C. Cox,

Gnonen W. FAULKNEB. 

